@article{oai:nifs-repository.repo.nii.ac.jp:02000334,
 author = {SU, Pengjuan and LAN, H. and ZHOU, C. and BAO, J. and LIU, Adi and ZHU, Xiang and WU, M. and LUO, C. and HAN, J. and WANG, Jialei and LIU, Haiqing and ZHANG, Tao and ZHOU, R. and LIN, S. and ZHAO, H. and SUN, Youwen and QIU, Zhiyong and CHU, Nan and TANG, T. and TAN, Y. and ZENG, L. and GAO, Z.},
 issue = {3},
 journal = {Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges},
 month = {Feb},
 note = {ORCID　0000-0002-2486-1847, A series of high-frequency (400 ∼ 1000 kHz) bursting core-localized Alfvén instabilities have been observed during ohmic discharges in EAST tokamak. The instability trigger favours the discharge conditions of low toroidal magnetic field and low electron density. The toroidal mode numbers are mainly n = 2 ∼ 3 and they propagate in the ion diamagnetic drift (co-current) direction. These modes are radially localized in the range of ρtor = 0.2 ∼ 0.35 based on Doppler BackScatter measurement. They are identified as ellipticity-induced Alfvén eigenmodes (EAEs) occurring at q = 1 rational surfaces by magnetohydrodynamics simulations using the realistic geometry and plasma profiles. The EAEs show regular bursts with ∼10 ms duration along with the mode frequency chirping downwards and upwards rapidly. It is also found that sawtooth events can interrupt the growth and evolution of the EAEs, causing the modes to disappear immediately. Passing energetic electrons (EEs) that move much faster than Alfvén velocity are responsible for the destabilization of these EAEs, which attribute to the fact that the large poloidal and toroidal frequencies mostly cancel each other and satisfy the EAE resonance},
 title = {Bursting core-localized ellipticity-induced Alfvén eigenmodes driven by energetic electrons during EAST ohmic discharges},
 volume = {64},
 year = {2024}
}